WO2024037339A1 - Procédés et appareil de traitement d'informations d'état de canal, nœud de communication et support de stockage - Google Patents

Procédés et appareil de traitement d'informations d'état de canal, nœud de communication et support de stockage Download PDF

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Publication number
WO2024037339A1
WO2024037339A1 PCT/CN2023/110685 CN2023110685W WO2024037339A1 WO 2024037339 A1 WO2024037339 A1 WO 2024037339A1 CN 2023110685 W CN2023110685 W CN 2023110685W WO 2024037339 A1 WO2024037339 A1 WO 2024037339A1
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channel
information
sets
state information
channel state
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PCT/CN2023/110685
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English (en)
Chinese (zh)
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鲁照华
肖华华
刘文丰
李伦
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中兴通讯股份有限公司
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Publication of WO2024037339A1 publication Critical patent/WO2024037339A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity

Definitions

  • This application relates to the field of communication technology, for example, to channel state information processing methods, devices, communication nodes and storage media.
  • Multi-antenna technology can improve the performance of wireless communication systems, therefore, multi-antenna technology is widely used in various wireless communication systems.
  • the network side needs to obtain more accurate channel state information (Channel State Information, CSI).
  • CSI Channel State Information
  • AI artificial intelligence
  • the N channel information before the reference time slot the M channel state information after the reference time slot is obtained using AI.
  • the terminal side cannot effectively obtain the N channel information before the reference time slot, and only obtains K channel information, where K is less than N.
  • Embodiments of the present application provide a channel state information processing method, device, communication node, and storage medium.
  • embodiments of the present application provide a channel state information processing method, which is applied to a first communication node.
  • the method includes:
  • Receive N sets of reference signal configuration information and K sets of reference signals obtain K channel information based on the K sets of reference signals; determine M channel status information based on the K channel information; where K, N, and M are all A positive integer, and K is less than N and M is greater than or equal to 1.
  • embodiments of the present application provide a channel state information processing method, which is applied to the second communication node.
  • the method includes:
  • embodiments of the present application provide a channel state information processing device integrated in a first communication node.
  • the device includes:
  • the receiving module is used to receive N sets of reference signal configuration information and K sets of reference signals; the acquisition module is used to acquire K channel information according to the K sets of reference signals; the determination module is used to obtain K channel information according to the K sets of reference signals.
  • the channel information determines M pieces of channel status information; among them, K, N, and M are all positive integers, and K is less than N, and M is greater than or equal to 1.
  • embodiments of the present application provide a channel state information processing device integrated in a second communication node.
  • the device includes:
  • the sending module is used to send N sets of reference signal configuration information; the sending module is also used to send K sets of reference signals; wherein the K sets of reference signals are used by the first communication node to obtain K channel information, and according to the K Channel information determines M channel status information.
  • K, N, and M are all positive integers, and K is less than N, and M is greater than or equal to 1.
  • embodiments of the present application provide a communication node, including a memory and a processor.
  • the memory stores a computer program.
  • the processor executes the computer program, the first and second aspects of the embodiments of the present application are implemented.
  • the channel state information processing method provided.
  • embodiments of the present application provide a storage medium that stores a computer program.
  • the computer program is executed by a processor, the channel state provided in the first and second aspects of the embodiments of the present application is realized.
  • Information processing methods are described in detail below.
  • Figure 1 is a schematic structural diagram of a wireless communication system provided by an embodiment of the present application.
  • Figure 2 is a schematic diagram of the channel state information processing process provided by the embodiment of the present application.
  • Figure 3 is a schematic flow chart of a channel state information processing method provided by an embodiment of the present application.
  • Figure 4 is another schematic flowchart of a channel state information processing method provided by an embodiment of the present application.
  • Figure 5 is a schematic structural diagram of a channel state information processing device provided by an embodiment of the present application.
  • Figure 6 is another structural schematic diagram of a channel state information processing device provided by an embodiment of the present application.
  • Figure 7 is a schematic structural diagram of a communication node provided by an embodiment of the present application.
  • the channel state information processing method provided by the embodiments of the present application can be applied to various wireless communication systems, such as long term evolution (LTE) systems, fourth generation mobile communication technology (4th-generation, 4G) systems, fifth generation 5th-generation mobile communication technology (5th-generation, 5G) system, LTE and 5G hybrid architecture system, 5G New Radio (NR) system, and new communication systems emerging in future communication development, such as the sixth-generation mobile communication technology (6th-generation, 6G) system etc.
  • Figure 1 shows a schematic networking diagram of a wireless communication system provided by an embodiment. As shown in Figure 1, the wireless communication system includes a terminal device 110, an access network device 120 and a core network device 130.
  • the terminal device 110 can be a device with wireless transceiver function, and can be deployed on land (such as indoor or outdoor, handheld, wearable or vehicle-mounted, etc.); it can also be deployed on water (such as ships, etc.); it can also be deployed in the air. (such as aircraft, balloons and satellites, etc.).
  • land such as indoor or outdoor, handheld, wearable or vehicle-mounted, etc.
  • water such as ships, etc.
  • it can also be deployed in the air. (such as aircraft, balloons and satellites, etc.).
  • terminal devices 110 are: UE, mobile phone, mobile station, tablet computer, notebook computer, ultra-mobile personal computer (UMPC), handheld computer, netbook, personal digital assistant (Personal Digital Assistant, PDA) and other user equipment that can be connected to the Internet, or virtual reality (VR) terminals, augmented reality (AR) terminals, wireless terminals in industrial control (industrial control), and wireless terminals in self-driving (self-driving) , wireless terminals in remote medical, wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, smart home ), or IoT nodes in the Internet of Things, or vehicle-mounted communication devices in the Internet of Vehicles, or entertainment and game equipment or systems, or global positioning system equipment, etc.
  • the embodiment of the present application does not limit the form of the terminal device.
  • the terminal device 110 may be referred to as a terminal.
  • the access network device 120 is an access device through which the terminal device 110 wirelessly accesses the wireless communication system, and may be a base station or an evolved base station (Long Term Evolution advanced, LTEA). evolved NodeB (eNB or eNodeB), transmission reception point (TRP), base station or gNB in 5G mobile communication system, base station in future mobile communication system or interface in Wireless Fidelity (WiFi) system Entry node, etc.
  • Base stations can include various macro base stations, micro base stations, home base stations, wireless remotes, routers, WIFI equipment, or various network-side equipment, location management functions, such as primary cells and secondary cells. , LMF) equipment. It can also be a module or unit that completes some functions of the base station.
  • the access network equipment may be referred to as a base station.
  • the core network device 130 may include an access and mobility management network element and a session management network element.
  • the terminal device 110 can access the core network through the access network device 120 to implement data transmission.
  • the reference signal includes but is not limited to the Channel-State Information reference signal (CSI-RS), which includes zero-power CSI-RS (Zero Power CSI-RS, ZP CSI-RS) and non-zero power CSI-RS (Non-Zero Power CSI-RS, NZP CSI-RS), channel state information interference measurement signal (Channel-State Information- Interference Measurement (CSI-IM), Sounding reference signal (SRS), Synchronization Signals Block (SSB), Physical Broadcast Channel (PBCH), Synchronization Signal Block/Physical Broadcast Channel (SSB) /PBCH).
  • CSI-RS Channel-State Information reference signal
  • CSI-IM Channel-State Information- Interference Measurement
  • SRS Synchronization Signals Block
  • PBCH Physical Broadcast Channel
  • SSB Synchronization Signal Block/Physical Broadcast Channel
  • NZP CSI-RS can be used to measure channels or interference; CSI-RS can also be used for tracking, so CSI-RS can also be called tracking reference signal (CSI-RS for Tracking, TRS); CSI-IM is generally used To measure interference, SRS is used for channel estimation or obtaining uplink precoding.
  • the set of resource elements (Resource Elements, RE) used to transmit reference signals is called reference signal resources, such as CSI-RS resource, SRS resource, CSI-IM resource, and SSB resource.
  • the SSB may include a synchronization signal block and/or a physical broadcast channel.
  • resources for transmitting reference signals may also be called reference signal resources.
  • multiple reference signal resources may be combined into a set (such as CSI-RS resource set, CSI-IM resource set, SRS resource set), a reference signal resource set includes at least one reference signal resource, and multiple reference signal resource sets can come from the same reference signal resource setting (such as CSI-RS resource setting, SRS resource setting, CSI- IM resource setting, among which, CSI-RS resource setting may be merged with CSI-IM resource setting, both are called CSI-RS resource setting), and the parameter information of the reference signal is configured through the reference signal resource setting.
  • the second communication node configures measurement resource information, and the measurement resource information is used to obtain channel state information.
  • the measurement resource information includes C N channel measurement resource (Channel Measurement Resource, CMR) information and C M interference measurement resource (Interference Measurement Resource, IMR) information, where C N and C M are positive integers.
  • the second communication node configures the measurement resource information in a reporting configuration (report config) or reporting setting (reporting setting).
  • the C N pieces of CMR information are used by the terminal for channel measurement
  • the C M pieces of IMR information are used by the terminal for measuring the interference received.
  • two antenna ports are called quasi co-located (QCL), which means: if the properties of the channel transmitted by the symbols on one antenna port can be determined from the properties of the symbols on the other antenna port, The channel through which the symbols are transmitted is inferred, then the two antenna ports are said to be quasi-co-located.
  • QCL quasi co-located
  • the two ports of QCL come from the same base station or node.
  • the channel attributes mentioned here include but are not limited to: average gain, delay spread, Doppler spread, Doppler shift, average delay parameters , spatial user reception parameters (spatial UE-Rx parameters), etc.
  • the antenna port includes but is not limited to a demodulation reference signal (DMRS) pilot port or index, an SRS port or index, and an SS block port or index.
  • the QCL relationship includes one of CSI-RS resource configuration information and synchronization signal block index (synchronization signal block index).
  • the number block index includes the primary synchronization signal block index and the secondary synchronization signal block index.
  • the channel state information reference signal resource configuration information includes at least one of the following information: CSI-RS starting symbol index, ending symbol index, pattern, density, pilot cyclic shift sequence, orthogonal code (Orthogonal Cover Code, OCC) and other information.
  • Quasi-colocation can include QCL type A, QCL type B, QCL type C, and QCL type D.
  • the two ports satisfying the quasi-colocation relationship means that the large-scale information of one port can be derived from the large-scale information of the other port.
  • the large-scale information includes but is not limited to: Doppler shift (Doppler shift), Doppler spread (Doppler spread), average delay, delay spread, Spatial Rx parameter.
  • Doppler shift Doppler shift
  • Doppler spread Doppler spread
  • average delay delay spread
  • Spatial Rx parameter Spatial Rx parameter.
  • a QCL Type is classified as follows:
  • the second communication node needs to obtain channel state information.
  • a way to obtain channel state information is provided.
  • the N time slots before reference time slot n such as slot n-8, slot n-6, slot n-4, slot n-2
  • channel information prediction reference time slot n and the M time slots after the reference time slot n (such as slot n, slot n+2, Channel status information of slot n+4).
  • the second communication node only transmits K sets of N sets of reference signals due to resource conflicts or other reasons. As a result, the terminal cannot effectively obtain the N channel information before reference time slot n. K pieces of channel information have been obtained.
  • the technical solution provided by the embodiment of the present application aims to receive less than The technical problem of obtaining channel state information is solved when the desired number of sets of reference signals is required.
  • Figure 3 is a schematic flowchart of a channel state information processing method provided by an embodiment of the present application. This method is applied to the first communication node.
  • the first communication node may be a terminal
  • the second communication node may be a base station.
  • the method may include:
  • S301 Receive N sets of reference signal configuration information and K sets of reference signals.
  • the second communication node transmitted N sets of reference signal configuration information. Due to conflicts between the reference signal resources configured by the second communication node or other reasons, the second communication node only transmitted K sets of reference signals, where K and N are positive Integer, and K is less than N. Therefore, the first communication node can only receive corresponding K sets of reference signals based on the received N sets of reference configuration information.
  • N sets of reference signal configuration information correspond to N sets of reference signals, and the K sets of reference signals may be part of the N sets of reference signals.
  • the K sets of reference signals can be the first K sets of reference signals, the last K sets of reference signals, and the intermediate continuous reference signals among the N sets of reference signals. K sets of reference signals or any non-continuous K sets of reference signals.
  • the reference signal configuration information includes a resource type (resourceType), where the resource type defines the time domain transmission characteristics of the reference signal.
  • the resource type may include one of the following: periodic (periodic) reference signal. , aperiodic reference signal, semi-persistent reference signal.
  • the resource categories included in the N sets of reference signal configuration information may be the same, that is, two of the values of K1, K2, and K3 are zero.
  • the N sets of reference signal configuration information may include all Periodic reference signals are either non-periodic reference signals or semi-continuous reference signals.
  • the N sets of reference signal configuration information include at least two resource categories of reference signals, for example, at least two of the values of K1, K2, and K3 are greater than zero.
  • the second communication node needs to configure and transmit four sets of reference signals, where these four sets of reference signals can be periodic, semi-persistent, or aperiodic.
  • these four sets of reference signals can be periodic, semi-persistent, or aperiodic.
  • Periodic reference signals in another configuration, there are two sets of periodic reference signals and two sets of aperiodic reference signals; in another configuration, there are two sets of semi-continuous reference signals and two sets of periodic reference signals etc.
  • N sets of reference signal configuration information have the same quasi-co-located parameters.
  • a set of reference signals may include one of the following: a reference signal resource, a group of reference signal resources, a reference signal resource set, and a reference signal resource corresponding to a reference signal resource configuration.
  • a set of reference signals can be a reference signal resource, such as a channel-state information reference signal (CSI-RS) resource, or a sounding reference signal (Sounding Reference Signal, SRS) resource. Or a Synchronization Signals Block (SSB) resource.
  • a set of reference signals may be a set of reference signal resources, such as a set of CSI-RS resources, or a set of SRS resources, or a set of SSB resources.
  • a set of reference signals may be a reference signal resource set, such as a CSI-RS resource set, or an SRS resource set, or an SSB resource set.
  • a set of reference signals may be a reference signal resource corresponding to a reference signal resource configuration, such as a CSI-RS resource config/setting, or an SRS resource config/setting, or an SSB resource config/setting.
  • the reference signals in a set of reference signals may also be reference signals of other concepts besides CSI-RS, SSB, and SRS, which may have different names in different systems, that is, the embodiment of the present application.
  • the reference signals in can also be other reference signals used to obtain channel state information, channel information, mobility management, and positioning management.
  • the reference signal is also called pilot signal, etc.
  • the set of reference signals may include a set of reference signals for channel measurements and a set of reference signals for interference measurements.
  • the channel information is information obtained based on a reference signal (for example, CSI-RS) and used to describe the channel environment between the first communication node and the second communication node, such as a time domain channel matrix and a frequency domain channel matrix.
  • CSI-RS reference signal
  • the channel information is a complex matrix related to the number of transmitting antennas Nt, the number of receiving antennas Nr, and resource elements (Resource Elements, RE). For example, there is at least one Nr*Nt channel matrix on a physical resource block (Physical Resource Block).
  • the second communication node sends reference signals for channel measurement in K time slots
  • the first communication node receives the reference signals for channel measurement sent in K time slots, and obtains the reference signals respectively based on the received reference signals of K time slots.
  • Channel information corresponding to the time slot thereby obtaining K channel information.
  • the K sets of reference signals are transmitted in no more than K time slots. For example, some time slots transmit more than one set of reference signals on different frequency domain resources.
  • the K pieces of channel information may be channel information before the reference time slot.
  • the reference time slot may include at least one of the following: a time slot agreed between the first communication node and the second communication node, a current time slot, a time slot indicated by the second communication node, the A time slot obtained by adding a fixed offset to a time slot indicated by the second communication node or a time slot obtained by adding a fixed offset to the time slot indicated by the first communication node receiving signaling from the second communication node.
  • M is a positive integer, and M is greater than or equal to 1.
  • the M pieces of channel state information are reference time slots and channel state information after the reference time slots.
  • the channel state information may include at least one of the following: channel state information-reference signal resource indicator (CSI-RS Resource Indicator, CRI), synchronization signal block resource indicator (Synchronization Signals Block Resource Indicator, SSBRI), reference signal received power (Reference Signal Received Power (RSRP), Differential RSRP (Differential RSRP), Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), Layer Indicator (LI), Rank Indicator , RI), Level 1 Signal to Interference plus Noise Ratio (L1-SINR), Differential L1-SINR (Differential L1-SINR), precoding information, etc.
  • CSI-RS Resource Indicator CRI
  • CRI channel state information-reference signal resource indicator
  • SSBRI Synchron Signal Received Power
  • RSRP Reference Signal Received Power
  • CQI Channel Quality Indicator
  • PMI Precoding Matrix Indicator
  • LI Layer Indicator
  • the precoding matrix indication is one type of precoding information, that is, the precoding information is implemented based on the codebook.
  • the precoding information also includes methods based on non-codebook implementation, for example, the second type of precoding information.
  • the CSI including the first type of precoding information is called the Type 1 CSI.
  • CSI including the second type of precoding information is called second type CSI.
  • the first communication node and the second communication node can transmit channel state information matching the channel through the first type of precoding information.
  • the first type of precoding information is based on the traditional channel characteristic matrix or the quantization of the characteristic matrix.
  • Precoding information composed of values.
  • the codebook here includes L codewords, and its main idea is that the first communication node and the second communication node save L codewords in advance according to a prescribed formula, table, or dictionary.
  • the codeword is a vector.
  • the codeword is a matrix, and the matrix includes r columns, each column is also a vector. Each column of the matrix is mutually orthogonal.
  • the vector that constitutes the codeword is a 0-1 vector, where only one value of the entire vector is 1 and the other values are zero.
  • the vector making up the codeword is a DFT vector (Discrete Fourier Transform, DFT).
  • the vectors constituting the codeword are two or more DFT vectors obtained through a tensor product (kronecker product).
  • the vectors that constitute the codeword are two or more DFT vectors that are connected by multiplying by different phase rotations.
  • the vectors constituting the codeword are two or more DFT vectors obtained by tensor product (kronecker product) and multiplication by phase rotation.
  • the first communication node or the second communication node transmits data or signals by searching for L codewords and finding the codeword that best matches the channel as the optimal codeword.
  • the codewords matching the channel here include but are not limited to at least one of the following: the distance between the codeword and the channel is the smallest, the correlation between the codeword and the channel is the largest, the distance between the codeword and the optimal right singular vector or matrix of the channel is the smallest, The optimal right singular vector or matrix correlation between the codeword and the channel is the largest, the calculated signal-to-noise ratio between the codeword and the channel is the largest, etc.
  • L is an integer greater than 1, which is generally greater than the number of transmitting antennas.
  • the first communication node and the second communication node may also transmit channel state information matching the channel through the second type of precoding information.
  • the second type of precoding information obtains channel state information based on AI.
  • the first communication node and the second communication node obtain channel state information through an encoder of an autoencoder, and the autoencoder includes an encoder and a decoder.
  • the encoder is deployed at a first communication node (such as a terminal), and the decoder is deployed at a second communication node (such as a base station).
  • the first communication node compresses the obtained channel H through the encoder to obtain the compressed H1, and quantizes the compressed channel H1 and feeds it back to the second communication node.
  • the second communication node receives the quantized H1, dequantizes it and inputs it for decoding.
  • the decoder decompresses it and restores H.
  • H includes K0 elements.
  • the first communication node selects K elements from H as H1 and provides feedback on the quantization of H1.
  • the second communication node receives the K quantized elements and dequantizes them, and then The quantized K elements are input to the AI module, and the AI module outputs K0 elements as the recovery of H, thereby obtaining the precoding matrix of H.
  • K and K0 are integers greater than 1, and K is less than K0.
  • through the compressor H1 or the K elements selected from H can be called the second type of precoding information.
  • the quantized H1 can also be called the second type of precoding information.
  • the second type of precoding information may also be a precoding matrix generated by other non-AI methods that is different from the first type of precoding information.
  • the second type of precoding information may also be a precoding matrix other than the first type of precoding information.
  • the first communication node can determine M pieces of channel information based on the K pieces of channel information, and quantize the M pieces of channel information to obtain M pieces of channel state information.
  • K pieces of channel information can be processed through AI mode to obtain M pieces of channel information.
  • K pieces of channel information are sequentially encoded and then input into the first AI network, and the M pieces of channel information are determined through the first AI network;
  • K channel information can also be filtered or averaged to obtain M channel information through linear mapping;
  • K channel information can also be processed into M channel information through nonlinear mapping.
  • M pieces of channel information can also be encoded and then input into the corresponding second AI network, and M pieces of channel state information corresponding to the M pieces of channel information can be output through the second AI network.
  • M pieces of channel state information can also be obtained directly based on K pieces of channel information.
  • determining M channel state information based on K channel information includes: determining one channel state information based on at least one channel information among the K channel information, wherein the channel state information is the first type of precoding information.
  • one channel state information may be determined based on the channel information corresponding to the reference signal with the largest transmission time slot among the K sets of reference signals.
  • the first communication node does not expect to receive less than N sets of reference signals.
  • determining M pieces of channel state information based on K pieces of channel information includes: when K is less than or equal to the first threshold X, determining one piece of channel state information based on at least one channel information among the K pieces of channel information, Wherein, the channel state information is the first type of precoding information, and X is an integer greater than 1 and less than N.
  • determining M channel state information based on K channel information includes: when K is less than or equal to the second threshold Y, the first communication node determines 0 channel state information or determines the channel state information. is the empty set, where Y is an integer greater than 1 and less than N.
  • determining M channel state information based on K channel information includes: obtaining N channel information based on K channel information; determining M1 channel state information based on the first acquisition method and N channel information, wherein, M1 is a positive integer less than or equal to M.
  • M1 is a positive integer less than or equal to M.
  • K pieces of channel information are zero-padded to obtain N pieces of channel information.
  • N channel information when K is greater than the first threshold X, obtain N channel information; M1 channel status information is determined based on the N channel information.
  • determining M pieces of channel state information based on K pieces of channel information includes: determining M2 pieces of channel state information based on the second acquisition method and K pieces of channel information, wherein M2 is a positive integer less than or equal to M. .
  • M2 is a positive integer less than or equal to M.
  • M2 pieces of channel state information are determined according to the second acquisition method and K pieces of channel information, where Z is an integer greater than 1 and less than N.
  • the first and second of the first acquisition method and the second acquisition method are only used to distinguish the method of acquiring channel state information.
  • the first acquisition method is channel state information using N pieces of channel information as input. method of obtaining.
  • the second acquisition method is a channel state information acquisition method that takes K pieces of channel information as input.
  • the first acquisition method is a method originally determined by the first communication node or the second communication node to obtain channel state information based on channel information
  • the second acquisition method is a newly determined method of obtaining channel state information by the first communication node or the second communication node. channel status information.
  • the threshold is determined according to the second communication node and is indicated to the first threshold through high-level signaling or physical layer signaling.
  • Communication node the first communication node determines the threshold by receiving the high-layer signaling or physical layer signaling.
  • the threshold is determined in a manner agreed upon by the first communication node and the second communication node.
  • the threshold is determined by the second communication node according to its own capabilities.
  • the obtained channel state information and/or the time slot corresponding to the feedback obtained channel state information may also be fed back to the second communication node.
  • a time slot can be a slot or a mini slot.
  • a slot or sub-slot includes at least one symbol.
  • the symbol here refers to the time unit in a subframe or frame or time slot, for example, it can be an orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbol, single carrier frequency division multiplexing multiple access (Single- Carrier Frequency Division Multiple Access (SC-FDMA) symbols or Orthogonal Frequency Division Multiple Access (OFDMA) symbols.
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA Single- Carrier Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • the first communication node and the second communication node need to define a CSI report (CSI report or CSI report congfig), where the CSI report defines at least one of the following parameters: time-frequency resources for feedback CSI, CSI It includes information such as report quality (reportQuantity), time domain category of CSI feedback (reportConfigType), channel measurement resources, interference measurement resources, and measured bandwidth size.
  • CSI report defines at least one of the following parameters: time-frequency resources for feedback CSI, CSI It includes information such as report quality (reportQuantity), time domain category of CSI feedback (reportConfigType), channel measurement resources, interference measurement resources, and measured bandwidth size.
  • the CSI report can be transmitted on the uplink transmission resources, and the uplink transmission resources can include a Physical Uplink Shared Channel (PUSCH) and a Physical Uplink Control Channel (PUCCH); at the same time, the CSI report It also includes time domain characteristics, including periodic CSI report (periodic CSI report, P-CSI), aperiodic CSI report (aperiodic CSI report, AP-CSI), semi-persistent CSI report (semi-persistent CSI report, SP- CSI).
  • periodic CSI report periodic CSI report
  • P-CSI periodic CSI report
  • aperiodic CSI report aperiodic CSI report
  • AP-CSI aperiodic CSI report
  • SP-CSI semi-persistent CSI report
  • P-CSI transmits a relatively small number of bits and can be transmitted on PUCCH
  • A-CSI transmits a larger number of bits and is generally transmitted on PUSCH
  • SP-CSI can be transmitted on PUSCH or Transmitted based on PUCCH.
  • P-CSI based on PUCCH transmission is generally configured using high-level signaling (Radio Resource Control, RRC), and SP-CSI based on PUCCH transmission is also configured or activated using high-level signaling (RRC and/or MAC CE).
  • DCI Downlink control information
  • PDCCH Physical downlink control channel
  • the above-mentioned channel state information and the time slot corresponding to the channel state information may be transmitted in uplink transmission resources.
  • the above channel state information may be carried and transmitted on at least one aperiodic PUSCH.
  • the above channel state information may be carried and transmitted on at least one semi-persistent PUSCH.
  • the above channel state information may be carried and transmitted on the PUCCH of at least one cycle.
  • the second communication node configures M CSI reports that need to be fed back to the first communication node through high-level signaling and/or physical layer signaling, and each CSI report has an index value (identity, ID). , called CSI reportID, the first communication node can select M C CSI reports among the M CSI reports according to its own computing power or processing power and the requirements of the second communication node. And according to the uplink feedback resources, at least one CSI report among the M C CSI reports is fed back, where M and M C are positive integers, and M C ⁇ M. In one example, M C CSI reports need to be fed back, but the feedback resources of at least two of the M C reports conflict.
  • the conflicting feedback resources of the two reports refer to the feedback resources used to feed back the two reports.
  • At least one symbol in the transmission resources (such as PUCCH or PUSCH) corresponding to the two reports is the same and/or at least one subcarrier is the same.
  • the first communication node needs to feed back multiple CSI reports, wherein transmission resources corresponding to at least L CSI reports among the multiple CSI reports conflict.
  • at least one of the L CSI reports with conflicts includes a report of the second type of precoding information, where L is a positive integer.
  • the priority value (PV) of L conflicting CSI reports can be calculated according to the priority calculation formula, and sorted according to the priority values from small to large, and at least one CSI report with a small priority is selected for uplink transmission. transferred in resources.
  • the high-level signaling includes but is not limited to Radio Resource Control (Radio Resource Control, RRC), Media Control Control Element (Media Access Control control element, MAC CE), the first communication node and the third communication node.
  • RRC Radio Resource Control
  • MAC CE Media Access Control control element
  • Physical layer signaling can also be transmitted between two communication nodes, for example, physical layer signaling is transmitted on the PDCCH or physical layer signaling is transmitted on the PUCCH.
  • the indicator of various parameters may also be called an index or an identifier (Identifier, ID), which are completely equivalent concepts.
  • the wireless system resource identifier may include Including but not limited to one of the following: a reference signal resource, reference signal resource group, reference signal resource configuration, channel status information report, CSI report set, terminal, base station, panel, neural network, sub-neural network, neural network layer, etc. index of.
  • the second communication node may indicate the identity of one or a group of resources to the first communication node through various high-layer signaling or physical layer signaling.
  • Figure 4 is another schematic flowchart of a channel state information processing method provided by an embodiment of the present application. This method can be applied to the second communication node, as shown in Figure 4, the method can include:
  • the K sets of reference signals are used by the first communication node to obtain K channel information and determine M channel state information based on the K channel information.
  • K, N, and M are positive integers, and K is less than N, and M is greater than or equal to 1.
  • a set of reference signals includes one of the following: a reference signal resource, a group of reference signal resources, a reference signal resource set, and a reference signal resource corresponding to a reference signal resource configuration.
  • the N sets of reference signal configuration information have the same quasi-co-located parameters.
  • the K pieces of channel information are channel information before the reference time slot, and/or the M pieces of channel state information are the reference time slot and channel state information after the reference time slot.
  • the K sets of reference signals are sent according to the N sets of reference signal configuration information.
  • the N sets of reference signal configuration information correspond to N sets of reference signals, and the K sets of reference signals are part of the N sets of reference signals.
  • the channel state information fed back by the first communication node and/or the time slot corresponding to the channel state information may be received.
  • the second communication node transmits only K sets of reference signals among N sets of reference signals due to resource conflicts or other reasons, where K is less than N.
  • the first communication node receives K sets of reference signals corresponding to N sets of reference signal configuration information and finds that the number of received reference signal sets is less than the expected number of sets. In this case, the first communication node can determine whether it is It has the ability to obtain M channel status information based on K channel information. If you do not have this ability power, then one channel state information can be determined based on at least one channel information among the K channel information.
  • the channel state information is the first type of precoding information, and the first type of precoding information may be information obtained by quantizing channel information in a codebook manner.
  • the first communication node may select at least one channel information among the K pieces of channel information, and obtain a channel state information corresponding to the at least one channel information in a predetermined manner.
  • the predetermined method may be a codebook-based method.
  • the above-mentioned predetermined method may be a method agreed between the first communication node and the second communication node, or may be a method determined by the first communication node based on the received signaling information, or it may be a method of the first communication node.
  • the node itself determines the method, and tells the second communication node the method it determines by feeding back the corresponding signaling information.
  • the above X is an integer greater than 1 and less than N.
  • the first communication node can based on slot n-6, slot n-4.
  • the reference signal in -4 determines the channel information of the corresponding time slot, processes the two obtained channel information into one channel information, and then quantizes the obtained one channel information through the preset codebook to obtain a channel state information , and feedback the channel status information.
  • the first communication node may determine a channel state information based on the channel information corresponding to the reference signal with the largest transmission time slot among the K sets of reference signals. For example, assuming that the time slots corresponding to the K sets of reference signals received by the first communication node are slot n-8, slot n-6, and slot n-4, the first communication node can based on the reference in slot n-4 The signal determines the channel information of the time slot, and quantizes the channel information of slot n-4 through the preset codebook, thereby obtaining a channel state information, and feeding back the channel state information.
  • the first communication node determines one channel state information based on at least one channel information among the K pieces of channel information. Therefore, , the first communication node can select one of the M transmission resources to feedback the obtained channel status information, and the remaining M-1 transmission resources do not feedback the channel status information, that is, the remaining M-1 transmission resources Resources can be used to transmit data or other signaling or signals.
  • the first communication node when the first communication node does not have the ability to obtain M channel state information based on K channel information, the first communication node can directly fall back to the traditional codebook method and select from the K channel information. At least one piece of channel information is used to determine a channel state information, so that the first communication node can effectively obtain the channel state when the number of received reference signal sets is less than the expected number of reference signal sets. information. Moreover, a channel state information is determined based on the channel information corresponding to the reference signal with the largest transmission time slot among the K sets of reference signals, which can better reflect the reference time slot and the channel state after the reference time slot, improving the accuracy of the channel state information.
  • the second communication node transmits only K sets of reference signals among N sets of reference signals due to resource conflicts or other reasons, where K is less than N.
  • the first communication node receives K sets of reference signals corresponding to N sets of reference signal configuration information and finds that the number of received reference signal sets is less than the expected number of sets. In this case, the first communication node can determine whether it is It has the ability to obtain M channel status information based on K channel information. If it has this capability, in one embodiment, the first communication node can perform a zero-padding operation on K channel information to obtain N channel information, and determine M1 channel state information based on the first acquisition method and the obtained N channel information. , wherein M1 is less than or equal to M.
  • the first communication node can determine which K channel information among the N channel information it has received based on the time slots of the reference signals corresponding to the K channel information, and fill the zero matrix for the channel information corresponding to the reference signal that has not been received, Therefore, the K pieces of channel information are processed into N pieces of channel information, and the N pieces of channel information are processed based on the first acquisition method, thereby determining M1 pieces of channel state information.
  • the zero matrix is a matrix of Nr*Nt dimensions, or a matrix of Nr*Nt*2 dimensions, where Nr, Nt are the number of antennas of the first communication node and the second communication node, and 2 is the number of channels.
  • the first acquisition method may be the original AI network.
  • the original AI network needs to input N pieces of channel information before it can output M pieces of channel status information. Therefore, if you continue to use the original AI network, you need to process K channel information into N channel information before you can continue to use the original AI network. In this embodiment, you can perform a zero-padding operation on the K channel information. , thereby obtaining N channel information.
  • determining whether M channel state information is less than M channel state information based on N channel information is also related to the capability of the first communication node.
  • the first communication node may directly determine M2 pieces of channel state information based on the second acquisition method and K pieces of channel information, where M2 is less than or equal to M.
  • the second acquisition method may be a new AI network, that is, the first communication node may search for a new AI network, and directly process K channel information into M2 channel state information through the new AI network.
  • the AI network is just a way to determine M1 channel state information from N channel information.
  • the AI network can be replaced with a processing module or other implementation methods.
  • the first communication node can process the K channel information into the desired N channel information, and then determine the M1 channel status information based on the first acquisition method and the N channel information. It can also directly process the K channel information based on the second acquisition method. K channel information is processed to obtain M2 channel status information. select Which processing method to choose can be based on the capabilities supported by the first communication node. For example, the first communication node only supports the first acquisition method, then the processing can be performed according to the first acquisition method. If the first communication node supports both methods, , you can choose any method for processing.
  • the first communication node may also determine whether K is greater than the first threshold X. If K is greater than the first threshold The information zero-filling operation obtains N pieces of channel information, and determines M1 channel status information based on the obtained N pieces of channel information. M2 channel status information may also be determined based on the second acquisition method and K pieces of channel information. In the case where K is less than or equal to the first threshold The communication node falls back to the traditional codebook method and selects at least one channel information from K channel information to determine a channel state information, so that the first communication node can receive less than the expected number of reference signal sets when the number of reference signal sets is to obtain more accurate channel status information.
  • the first communication node determines M2 channel state information based on the second acquisition method and K channel information, that is, when the amount of acquired historical channel information is large,
  • the second acquisition method is used to predict the channel state information, which improves the accuracy of the channel state information.
  • the first communication node when K is less than or equal to the second threshold Y, 0 channel state information is determined or the channel state information is determined to be an empty set, where Y is an integer greater than 1 and less than N. That is to say, when the number of received reference signal sets is far less than the expected number of sets, the first communication node does not perform the operation of determining M channel state information through K channel information.
  • the first communication node does not expect to receive less than N sets of reference signals.
  • the first communication node can perform a zero-padding operation on K channel information to obtain N channel information, and determine M1 channel status information based on the first acquisition method and the N channel information, or can also determine the second acquisition method. , and determine M2 channel state information based on the second acquisition method and K channel information, so that the first communication node can effectively obtain channel state information when the original feedback of determining M channel state information based on N channel information fails. . Moreover, by setting corresponding thresholds and selecting different channel state information processing methods, the determined channel state information is made more accurate.
  • Figure 5 is a schematic structural diagram of a channel state information processing device provided by an embodiment of the present application.
  • the device is integrated in the first communication node.
  • the method may include: a receiving module 501, an obtaining module 502 and a determining module 503.
  • the receiving module 501 is used to receive N sets of reference signal configuration information and K sets of reference signals; the acquisition module 502 is used to obtain K channel information according to the K sets of reference signals; the determination module 503 is used to determine M channel status information according to the K channel information; wherein K, N, M are positive integers, and K is less than N , M is greater than or equal to 1.
  • the receiving module 501 may include: a first receiving unit and a second receiving unit; the first receiving unit is used to receive N sets of reference signal configuration information; the second receiving unit is used to receive K set of reference signals.
  • a set of reference signals includes one of the following: a reference signal resource, a group of reference signal resources, a reference signal resource set, and a reference signal resource corresponding to a reference signal resource configuration.
  • the N sets of reference signal configuration information have the same quasi-colocation parameters.
  • the K pieces of channel information are channel information before the reference time slot, and/or the M pieces of channel state information are the reference time slot and the channel state information after the reference time slot.
  • the receiving module 501 is configured to receive the K sets of reference signals according to the N sets of reference signal configuration information. That is, the second receiving unit is configured to receive the K sets of reference signals according to the N sets of reference signal configuration information.
  • the N sets of reference signal configuration information correspond to N sets of reference signals
  • the K sets of reference signals are part of the N sets of reference signals.
  • the determining module 503 is configured to determine a channel state information based on at least one channel information among the K channel information, wherein the channel state information is the first type of precoding information. .
  • the determining module 503 is configured to determine a channel state information based on the channel information corresponding to the reference signal with the largest transmission time slot among the K sets of reference signals.
  • the first communication node does not expect to receive less than N sets of reference signals.
  • the determination module 503 is configured to determine a piece of channel state information based on at least one channel information among the K pieces of channel information when the K is less than or equal to the first threshold X. , wherein the channel state information is the first type of precoding information, and the X is an integer greater than 1 and less than N.
  • the determination module 503 is configured to determine 0 channel state information or determine the channel state information by the first communication node when the K is less than or equal to the second threshold Y.
  • the track status information is an empty set, where Y is an integer greater than 1 and less than N.
  • the determination module 503 is configured to obtain N channel information according to the K channel information; determine M1 channel status information according to the first acquisition method and the N channel information, wherein , the M1 is less than or equal to M.
  • the determining module 503 is configured to perform a zero-filling operation on the K channel information to obtain N channel information.
  • the K is greater than the first threshold X, and the X is an integer greater than 1 and less than N.
  • the determining module 503 is configured to determine M2 channel state information according to the second acquisition method and the K channel information, where the M2 is less than or equal to M.
  • the K is greater than the third threshold Z, and the Z is an integer greater than 1 and less than N.
  • the device further includes: a feedback module.
  • a feedback module configured to feed back the channel state information and/or feed back the time slot corresponding to the channel state information.
  • Figure 6 is another schematic structural diagram of a channel state information processing device provided by an embodiment of the present application. As shown in Figure 6, the device may include: a sending module 601.
  • the sending module 601 is used to send N sets of reference signal configuration information; the sending module 601 is also used to send K sets of reference signals; wherein the K sets of reference signals are used by the first communication node to obtain K channel information, and according to the K Channel information determines M channel status information, K, N, and M are positive integers, and K is less than N, and M is greater than or equal to 1.
  • the sending module 601 may include: a first sending unit and a second sending unit; the first sending unit is used to send N sets of reference signal configuration information; the second sending unit is used to send K set of reference signals.
  • a set of reference signals includes one of the following: a reference signal resource, a group of reference signal resources, a reference signal resource set, and a reference signal resource corresponding to a reference signal resource configuration.
  • the N sets of reference signal configuration information have the same quasi-co-located parameters.
  • the K pieces of channel information are channel information before the reference time slot, and/or the M pieces of channel state information are the reference time slot and channel state information after the reference time slot.
  • the sending module 601 is configured to send the K sets of reference signals according to the N sets of reference signal configuration information. That is, the second sending unit is configured to send the K sets of reference signals according to the N sets of reference signal configuration information.
  • the N sets of reference signal configuration information correspond to N sets of reference signals
  • the K sets of reference signals No. is part of the N sets of reference signals.
  • a receiving module is also included.
  • the receiving module is configured to receive the channel state information and/or receive the time slot corresponding to the channel state information.
  • a communication node in one embodiment, is provided, and its internal structure diagram can be shown in Figure 7.
  • the communication node includes a processor, memory, network interface and database connected through a system bus. Wherein, the processor of the communication node is used to provide computing and control capabilities.
  • the memory of the communication node includes non-volatile storage media and internal memory.
  • the non-volatile storage medium stores operating systems, computer programs and databases. This internal memory provides an environment for the execution of operating systems and computer programs in non-volatile storage media.
  • the database of the communication node is used to store data generated during the processing of channel status information.
  • the network interface of the communication node is used to communicate with external terminals through a network connection.
  • the computer program implements a channel state information processing method when executed by a processor.
  • FIG. 7 is only a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the communication nodes to which the solution of the present application is applied.
  • the communication nodes may include The figures show more or fewer parts, or some parts combined, or with different parts arrangements.
  • a first communication node In one embodiment, a first communication node is provided.
  • the first communication node includes a memory and a processor.
  • a computer program is stored in the memory. When the processor executes the computer program, the following is implemented:
  • K, N, M are positive integers, and K is less than N, and M is greater than or equal to 1.
  • a second communication node in one embodiment, includes a memory and a processor.
  • a computer program is stored in the memory. When the processor executes the computer program, the following is implemented:
  • a storage medium stores a computer program, and when the computer program is executed by a processor, the following is achieved:
  • K, N, M are positive integers, and K is less than N, and M is greater than or equal to 1.
  • a storage medium storing a computer program
  • the computer program when executed by the processor achieves the following:
  • the computer storage medium in the embodiment of the present application may be any combination of one or more computer-readable media.
  • the computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium.
  • the computer-readable storage medium may be, for example, but not limited to: an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination thereof.
  • Computer-readable storage media include (non-exhaustive list): electrical connection with one or more wires, portable computer disk, hard drive, random access memory (RAM), read-only memory (Read-Only Memory) , ROM), electrically erasable, programmable Read-Only Memory (EPROM), flash memory, optical fiber, portable compact disk read-only memory (Compact Disc Read-Only Memory, CD-ROM), optical memory components, magnetic storage devices, or any suitable combination of the above.
  • a computer-readable storage medium may be any tangible medium that contains or stores a program for use by or in connection with an instruction execution system, apparatus, or device.
  • a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, the data signal carrying computer-readable program code. Such propagated data signals may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above.
  • a computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device .
  • Program code embodied on a computer-readable medium can be transmitted using any appropriate medium, including but not limited to wireless, wire, optical cable, radio frequency (Radio Frequency, RF), etc., or any suitable combination of the above.
  • any appropriate medium including but not limited to wireless, wire, optical cable, radio frequency (Radio Frequency, RF), etc., or any suitable combination of the above.
  • Computer program code for performing operations of the present disclosure may be written in one or more programming languages, or a combination of programming languages, including object-oriented programming languages such as Java, Smalltalk, C++, Ruby, Go), and also includes conventional procedural programming languages (such as the "C" language or similar programming languages).
  • the program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server.
  • the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer, such as Use an Internet service provider to network connection).
  • LAN Local Area Network
  • WAN Wide Area Network
  • user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a vehicle-mounted mobile station.
  • the various embodiments of the present application may be implemented in hardware or special purpose circuitry, software, logic, or any combination thereof.
  • some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor, or other computing device, although the application is not limited thereto.
  • Embodiments of the present application may be implemented by a data processor of the mobile device executing computer program instructions, for example in a processor entity, or by hardware, or by a combination of software and hardware.
  • Computer program instructions may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or written in any combination of one or more programming languages source code or object code.
  • ISA Instruction Set Architecture
  • Any block diagram of a logic flow in the figures of this application may represent program operations, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program operations and logic circuits, modules, and functions.
  • Computer programs can be stored on memory.
  • the memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read only memory (ROM), random access memory (RAM), optical storage devices and systems (digital versatile disc DVD or CD), etc.
  • Computer-readable media may include non-transitory storage media.
  • the data processor can be any type suitable for the local technical environment, such as but not limited to general-purpose computers, special-purpose computers, microprocessors, digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC ), programmable logic devices (Field-Programmable Gate Array, FPGA) and processors based on multi-core processor architecture.
  • DSP Digital Signal Processing
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array

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Abstract

La présente demande concerne des procédés et un appareil de traitement d'informations d'état de canal, un nœud de communication et un support de stockage. Un procédé de traitement d'informations d'état de canal comprend : la réception de N éléments d'informations de configuration de signal de référence et de K signaux de référence ; l'acquisition de K éléments d'informations de canal selon les K signaux de référence ; et la détermination de M éléments d'informations d'état de canal selon les K éléments d'informations de canal, K, N et M étant tous des entiers positifs, K étant inférieur à N, et M étant supérieur ou égal à 1.
PCT/CN2023/110685 2022-08-19 2023-08-02 Procédés et appareil de traitement d'informations d'état de canal, nœud de communication et support de stockage WO2024037339A1 (fr)

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